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双耳同时冷热试验
🗣️ 情景例句
Hi, Dad. Everything's fine.
嗨 ，爸爸。一切都好。
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The conditions of society are such that skills have to be paid for in the same way that goods are paid for at a shop.
社会上的情况就是如此，技术是必须付钱去买的，就像在商店里要花钱买商品一样。